Attachment for a tooth-clasp with a mouth-plate or other form of denture.



- I N. s.- ESSTG ATTACHMENT FOR A TOOTH CLASP WTTH A MOUTH PLATE 0%? OTHER FGRM 0F DENTURE. APPLICATION HLED MYA-YTIO. I916.

Patentefi July 17,1917.

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NORMAN S. ESSIG, OF PHILADELPHIA, PENNSYLVANIA.

ATTACHMENT FOB. A ToorH-oLAsP WITHAMOUTI-I-PLATE on OTHER romvr or DENTUBE.

Patentedtluly 117, ram.

Application filed. May 10 1916. Serial No. 96,530.

To all whom it may concern:

Be it known that I, NORMAN S. Essie, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented v a new and useful Attachment for a Tooth-Clasp with a Mouth-Plate or other Form of Denture, of which the following is a specification.

My invention consists of a novel attachment for a tooth engaging clasp with a mouth plate or other form of denture whereby said clasp and mouth plate or denture are adapted to oscillate or reciprocate, so that the clasp may accommodate itself to the tooth to which it is applied, and said mouth plate or denture may conform to the position and motion of the clasp on the tooth and so compensate to the movable condition of a tooth or the denture, thus also avoiding strain on each other.

The invention is satisfactorily illustrated in the accompanying drawing, but the important instrumentalities thereof may be varied, as long as they are included in the scope of the claims.

Figure 1 represents a perspective view of a tooth engaging clasp, and an attachment therefor with a mouth plate or denture made in accordance with my invention.

Fig. 2 represents perspective views of the attachment, the members thereof being separated.

The remaining figures, 3 to 16, inclusive, represent perspective views, and side elevations in part of other embodiments of the invention.

Fig. 15 represents a plan view of a mouth plate partly broken away having my invention applied thereto.

Fig. 16 represents a perspective view of a bridge having my invention applied thereto.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings.

1 designates a clasp which is composed of a band of segmental form, its ends being separate adapting the clasp to be fitted surroundingly on a tooth and adjusted in diameter to teeth of varying thicknesses or sizes in transverse direction.

In order to connect said clasp with a mouth plate or other denture, I show in Figs. 1 and 2, a socket 2 which is secured to the crown of the clasp, it being conical or dishing in its interior and receiving freely the ball 3 which is connected with the stem 4,-the latter freely occupying the opening 5 in the ape-X of said socket, and eX- tending from the attachment 6 which is to be .embedded in the mouth plate or other denture, it being evident that the ball is retained in the socket forming together a ball and socket joint which admits of freedom of rotary motion of the clasp on the mouth plate or denture, and vice versa and so compensates to the movable condition of a tooth or the denture.

In Figs. 3 and 4 I show the clasp as having the vertically arranged sleeve 7 secured thereto near one of its ends, said sleevehaving therein in the direction of its length the slot 8, said sleeve receiving the post 9 which is adapted to turn therein, said slot being adapted to receive the teat 10 which is of less thickness than the width of the slot, so that the sleeve is enabled to rotate to a certain extent on said stem, and vice versa.

In Figs. 5 and 6 I show the clasp having on the crown the horizontally-extending ears 11, which are separated from each other and open on their inner sides so as to receive within the cross bar of a sleeve 12 which is swiveled on the post 13, whichis attached to the mouth plate or denture, the clasp being adapted to have a; compound oscillatory motion, viz. lateral and vertical on the mouth plate or denture, and vice versa, said stem being connected with the attachment 6 of the mouth plate or denture.

In Figs. 7 and 8, I show the clasp having in its orown'the vertically-extending slots 14 which receive the side limbs of the elbows 15, the latter being securedto the stem 16, on the outer end of which latter is the attachment 6 of the mouth plate or denture. The inner end of said stem 16 extends freely through an opening in the crown of the clasp and has thereon the head 17 which forms a swivel retaining the stem in position on the clasp and vice versa, allowing the clasp and dental plate or denture to rock one on the other limited by the slots 1 1 which receive the side limbs of the elbows 15 as stated above.

In Figs. 9 and 10 I show the clasp having therein the slot 18 which extends in the circular direction thereof and receives freely the stems 19 which are connected with the bifurcation 20 whose lower terminal 21 is adapted to be connected with the Tic mouth plate or denture in any suitable manner. I

On the inner end of the stem 19 is the head 22 which freely; embraces the walls of the slot 18 on the inner side of the clasp and admits of lateral motions of the clasp on the mouth plate or denture or vice versa.

In Figs. 11 and 12 I show on the exterior of the clasp the ears 23 which are disposed below the other and open toward each other to receive freely the ends of the post 24: which extends in vertical direction andhas connected with it the coil spring 25, whose terminals 26 rest against. the clasp on'opposit'e sides of said post and so exert yielding pressure of the clasp on the mouth plate or vice versa.

In Figs. 13 and 14 I show the stem 27 as swiveled to the clasp and having connected with itthe coil spring 28 whose ends extend in opposite directions therefrom and engage with the studs 29 on the clasp where by they are retained in position and adapted to slide on said studs in the rocking motion of the clasp on the mouth plate or denture and vice versa.

It will be noticed that in the several figures the clasp is adapted to turn or rock, as the case may be, in lateral or up and down directions on the mouth plate or denture and vice versa.

It isevident that the clasp may be applied to a removable bridge similar to the mouth plate or denture in the manner as hereinbefore set forth, this giving the teeth to which the clamps are attached their normal individual movements. It will be noted that the part 6 is a piece of material fixed rigidly to the mouth plate, which if rubber has said piece embedded therein and which if metal has such part soldered thereto. The part 20 which is of the form of a bifurcation is fixed to the mouth piece by the rivet member 21 on the terminal of said part, as has been stated, but in all cases, the clasp is free to turn, oscillate or swivel on the mouth piece and vice-versa or it may be fitted on a tooth and the mouth piece accommodate itself thereto owing to the turning, oscillating or swivel connection of the clasp with the carrying plate 6 or rivet member 21.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

1. A clasp for a tooth with a rcciprocating compensating. member attached thereto, said member being rigidly connected with a bridge or plate but giving free normal motion to said clasp and the tooth or teeth involved.

2. A clasp for a tooth with a reciprocating compensating member attached thereto, said member being adapted to be rigidly secured to a dental bridge or plate, thereby giving full and free motion to said clasp and the tooth or teeth involved.

3. A clasp .for a tooth, a piece adapted to be rigidly secured to a mouth plate, and a reciprocating compensating member intermediate of said plate and clasp attached to the latter clasp and plate.

NORMAN S. ESSIG.

Witnesses:

J OHN A. WmoERsHnIM, N. BUSSINGER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G." 

